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Observation visual field 10
samp
2
1
10
10
L
x
K
X
2
1
samp
10
10
L
y
K
Y
2
1
samp
10
10
L
z
K
Z
¯
x10 (
), ¯
y10 (
), ¯
z10 (
): Color matching functions in CIE 1964 auxiliary standard colorimetric
system
K:
Parameter 683 lm/W
1:
Measuring start wavelength 380 nm
2:
Measuring end wavelength 780 nm
:
=1
*
“Y” of the observation visual field 2
is used for the luminance Lv of the observation visual field
10
.
Chromaticity coordinates
Observation visual field 2
“xy” chromaticity coordinates in XYZ colorimetric system
Z
Y
X
X
x
Z
Y
X
Y
y
“u’v’” chromaticity coordinates in UCS colorimetric system
3Z
15Y
X
4X
u'
3Z
15Y
X
9Y
v'
Observation visual field 10
“x
10
y
10
” chromaticity coordinates in XYZ colorimetric system
10
10
10
10
10
Z
Y
X
X
x
10
10
10
10
10
Z
Y
X
Y
y
“u’v’” chromaticity coordinates in UCS colorimetric system
10
10
10
10
10
3Z
15Y
X
4X
u'
10
10
10
10
10
3Z
15Y
X
9Y
'
v
Correlated color temperature and deviation
To calculate the correlated color temperature and deviation, use the spectral distribution of the JIS Z
8725 light source and the measurement method of the correlated color temperature.
Correlated color temperature display range: 1563 K
≦
Tc
≦
100 000 K
Deviation display range:
-0.02
≦
duv
≦
0.02
Deviation means the distance from the black body radiation locus on CIE 1960 UCS chromaticity
diagram.
Содержание SR-3AR
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